Test EF 100-400 op FF

[boels069]

The Canon EF 100-400mm f/4.5-5.6 USM L IS is almost a boring lens but in a positive sense. It shows no extreme weaknesses nor strengths. You will find sharper lenses - primes that is - but it is very sharp for a zoom lens, especially considering its 400mm, and that's throughout the range at all relevant aperture settings. As such it e.g. far better than the corresponding Nikkor AF 80-400mm f/4.5-5.6 ED or the recently tested Sigma AF 120-400mm f/4.5-5.6 HSM just to give you two other popular examples here. The very low amount of lateral CAs contributes to the high sharpness perception - the fluorite and SUD elements are obvious very effective here. The amount of light falloff is comparatively moderate within the full format scope but you will be able to spot it at max. aperture in critical scenes. Distortions are very slight and as such not really relevant. The quality of the bokeh is decent but not on prime lens level.
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